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c757ef3507
Enable ring functionality by registering RX, AGG, TX, CMPL, and NQ rings with the firmware. Initialise the doorbells associated with the rings. Signed-off-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com> Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com> Reviewed-by: Rajashekar Hudumula <rajashekar.hudumula@broadcom.com> Link: https://patch.msgid.link/20250919174742.24969-9-bhargava.marreddy@broadcom.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
35 lines
927 B
C
35 lines
927 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2025 Broadcom */
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#ifndef _BNGE_DB_H_
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#define _BNGE_DB_H_
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/* 64-bit doorbell */
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#define DBR_EPOCH_SFT 24
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#define DBR_TOGGLE_SFT 25
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#define DBR_XID_SFT 32
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#define DBR_PATH_L2 (0x1ULL << 56)
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#define DBR_VALID (0x1ULL << 58)
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#define DBR_TYPE_SQ (0x0ULL << 60)
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#define DBR_TYPE_SRQ (0x2ULL << 60)
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#define DBR_TYPE_CQ (0x4ULL << 60)
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#define DBR_TYPE_CQ_ARMALL (0x6ULL << 60)
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#define DBR_TYPE_NQ (0xaULL << 60)
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#define DBR_TYPE_NQ_ARM (0xbULL << 60)
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#define DBR_TYPE_NQ_MASK (0xeULL << 60)
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struct bnge_db_info {
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void __iomem *doorbell;
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u64 db_key64;
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u32 db_ring_mask;
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u32 db_epoch_mask;
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u8 db_epoch_shift;
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};
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#define DB_EPOCH(db, idx) (((idx) & (db)->db_epoch_mask) << \
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((db)->db_epoch_shift))
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#define DB_RING_IDX(db, idx) (((idx) & (db)->db_ring_mask) | \
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DB_EPOCH(db, idx))
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#endif /* _BNGE_DB_H_ */
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